Page 9 - Mathematics Grade 11 Manual

GR 11 MATHEMATICS - Unit 1: Number and number relationships 8

Whole numbers: Whole numbers is a set of numbers which starts with 0 and

increases in units of one to infinity.

Integers: Integers are a set of numbers which includes all natural and whole numbers and

contains all the negative whole numbers.

2. EXPONENTS AND SURDS

2.1 Revision of exponential laws


1. x  a x  b x a b

2. x  a x  b x a b

3. x  0 1, x  0
1

a
4. x 
x a
a b
x
5. ( )  x ab
a
a
b
6. x  b x

Exercise 1

Simplify:

2y
x
x y
1. a  3 a a 5 2. s  s t  t  s 2x
2xy x y 4 3 3  x 3 x 1  2
3. 4. 3x
3
4
8xy  xy 8  3 1
3  12a  81 a 1  9 a 3  a 3 a 1  3 2 a
5. 6. a 1 a a
3 9 3a 3  3  3

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